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Delaware plans. From $32.99/month.

LLC formation in Delaware with a registered agent in Wilmington. Standard to validate; PRO to actually operate with EIN, banking and full advisory support.

Standard or PRO.
You decide.

Form your LLC in Delaware with basic state compliance included. Ideal for validating your project before you start operating.

$32.99 /mo
Setup fee $197
The EIN and Mercury operating bank account are included in the PRO plan.
Start with Standard
Includes
  • LLC formation with the Delaware Division of Corps
  • Registered Agent in Wilmington, DE
  • Standard single-member Operating Agreement
  • Aiden Books · invoices and documents
  • Annual state maintenance with the Delaware Division of Corporations
  • Franchise Tax $300/year: calculation and annual reminder (payment due by the client)
  • Chat with an advisor · response <24 business hours
No lock-in · cancel anytime · full details below.
No lock-in
Cancel anytime
Dedicated advisor
Not a call center
Included: address, Aiden Books and support
Apart: official fees and optional services
Unified dashboard
Everything in one place

Standard vs PRO,
in detail.

Feature
STANDARD
$32.99/mo
PRO
$99/mo
A. Formation and initial setup
LLC formation in Delaware
LLC → C-Corp conversion for fundraising
Standard single-member Operating Agreement
Custom multi-member Operating Agreement
EIN (Employer Identification Number)
Initial cap table and tracking
Formation 100% online (timing set by Delaware)
B. Annual Delaware state compliance
Registered Agent in Wilmington, DE
Good Standing certificate maintenance
Annual Franchise Tax handled (Annual Report C-Corp only)
Franchise Tax calculation $300/year
Franchise Tax payment reminder and guide
C. Banking and payments
Assisted Mercury application
with your own EIN
EIN included
Support opening your account
Email
Priority WhatsApp
Automatic organisation in Books
Multi-currency USD · EUR · GBP
Stripe integration
D. Bookkeeping (Books)
Aiden Books · document organisation
Categorization with Lunnar AI
Recording of bank transactions
Downloadable monthly reports
Annual accounts closing
E. Tax and legal advisory
Chat advisor
<24h
<2h
Direct email to your assigned advisor
Priority WhatsApp
Legal advisory for US contracts, NDAs, SAFEs
Quarterly calls with a US tax advisor
S-Corp election subject to IRS eligibility requirements; conversion to C-Corp
Network of Spanish tax advisors for personal income tax (IRPF)
Initial coordination in the event of an IRS inspection
F. Fundraising preparation
Cap table tracking in the dashboard
Basic data room for investors
SAFE and term sheet templates
Support with conversion to C-Corp for fundraising, depending on the circumstances
G. Collaboration and team
Multi-user access to the dashboard
Invite co-founders and collaborators
Permissions per section
Predefined access templates
H. Native integrations
Stripe (payments)
Mercury (banking)
Xero (importable bookkeeping)
Slack (advisor channel)
Aiden dashboard API
Read
Read and write
I. Support and response
Main support channel
Chat
WhatsApp + Email + Chat
Business-hours response SLA
<24h
<2h
Dedicated assigned advisor
Scheduled calls with advisor
Quarterly
Support hours
Mon-Fri 9am-6pm CET
Mon-Fri 9am-8pm CET

Services marked with a dash are available as add-ons on a quote basis through Aiden Tax Filing and the Aiden Startup partner network.

What others charge
separately:

With a traditional gestoría, each piece is contracted and billed separately. Scope also varies between providers (a gestoría may include full accounting): always compare what each one includes.

Gestoría fees
monthly fee, separate
+
Company formation
one-off payment, separate
+
Registered office address
separate fee
+
Business banking
separate process
vs
Aiden Startup Standard · $32.99/month
$32.99 /month
$32.99 × 12 = $396/year recurring + $197 one-off in year 1
One provider, one fee: formation, address and support in the same plan · official fees separate
See the comparison with Stripe Atlas, Doola, 1st Formations and more

Everything you use,
already connected.

Swipe to see each integration. Tap + to see what we do with it.

Delaware Division,
connected.

Delaware Division of Corporations — the most widely used corporate jurisdiction in the US. We form an LLC or C-Corp depending on your case.…

DELAWARE API CONNECTED · AIDEN STARTUP

IRS,
connected.

Internal Revenue Service, the US federal tax authority. Obtaining an EIN is included in the PRO plan. Applicable federal filings depend on t…

IRS API CONNECTED · AIDEN STARTUP

Mercury,
connected.

Assisted Mercury account application for Delaware companies formed with Aiden. Account opening and timing depend on review and approval by M…

MERCURY API CONNECTED · AIDEN STARTUP

Stripe,
connected.

Your Stripe account integrated with Books. Ideal if your Delaware company invoices globally in USD or EUR.…

STRIPE API CONNECTED · AIDEN STARTUP

Xero,
connected.

If you already use Xero, we can migrate your books or sync reports. An alternative if you're coming from another system.…

XERO API CONNECTED · AIDEN STARTUP

Slack,
connected.

Private channel with your Delaware advisor on the PRO plan. Also includes automatic IRS and Delaware deadline alerts.…

SLACK API CONNECTED · AIDEN STARTUP
Examples of common situations

In the words of our founders

What follows are not client testimonials: they are hypothetical examples of situations we commonly handle, using the real terms of the offer.

Coming from Stripe Atlas
Hypothetical example
A founder forms their LLC with Atlas and finds that annual compliance is on them. With Aiden, management, the dashboard and the Spanish-speaking advisor are part of the subscription; official fees are paid separately.
Standard Delaware
Operating fast in the UK
Hypothetical example
Companies House incorporation and Wise Business account managed end to end: the whole process is completed online, with no travel.
100%
process completed online
Standard UK
Documents up to date with Books
Hypothetical example
Invoices and documents are uploaded and organised in Aiden Books through the year, and at year end everything is easy to find to prepare the accounts.
PRO UK
Migrating an existing LLC
Hypothetical example
An LLC formed with another provider moves to Aiden: paperwork is brought up to date and state maintenance resumes from the dashboard.
Standard Delaware
Validating without a Spanish SL
Hypothetical example
To validate a project without the fixed costs of starting a Spanish SL with an accountant, a UK Limited with Aiden runs from €19.99/month plus official fees.
Standard UK
Questions for the advisor
Hypothetical example
Legal and tax questions are handled by the advisor over WhatsApp; on the PRO plan, with a response SLA under 2 business hours.
<2h
WhatsApp SLA · PRO plan
PRO UK
Getting paid with Aiden Pay
Hypothetical example
Client payments run on Stripe from the dashboard: Aiden adds no fee of its own — you only pay the payment provider's fee.
0%
fee added by Aiden
Standard UK
Incorporating from Latin America
Hypothetical example
From Argentina or Mexico, incorporation in the UK or Delaware is 100% remote, with no travel or physical presence, guided from the dashboard.
Standard UK

Hypothetical examples: these are not testimonials or reviews from real clients. The terms quoted (timelines, SLAs, prices) are those of the current published offer.

Start today · no lock-in
Encrypted data AES-256
Compliant with GDPR
Payments by Stripe
We file with Companies House
Support in Spanish
Cancel whenever want

Add-on services available

Annual or specialised services not included in any monthly plan. We handle these as add-ons whenever you need them.

Annual · IRS

Aiden Tax Filing

IRS filings according to the company’s tax classification, transactions and tax year.

  • Form 5472 and pro forma 1120 when applicable (foreign-owned single-member LLC)
  • Form 1065 when applicable (LLC treated as a partnership)
  • Form 1120 for C-Corps, generally even without taxable income
From €299/year per LLC
Get Aiden Tax Filing
Quote-based

Spain Tax Advisory

Support for your personal tax return in Spain, compatible with your US LLC.

  • IRPF return with a US LLC
  • Modelo 720 if applicable
  • Network of tax advisors in Spain
Personalised quote
Request a quote
Quote-based

Advanced IRS management

Specialised response when the IRS contacts you or opens a case.

  • Response to IRS notices
  • Federal audits
  • Penalty abatement negotiation
Personalised quote
Request a quote

Compara Delaware
with the United Kingdom.

Differences in taxation, formation time, banking, and ideal use cases for each jurisdiction.

About plans
Delaware.

Does a company formed in Delaware have to file a BOI report?

Companies formed in the United States, including Delaware LLCs and C-Corps, are exempt from FinCEN BOI reporting. It is not presented as a mandatory filing included in these plans. The exemption does not remove other tax or state obligations. See the official FinCEN information.

Why Delaware if I live in Spain?

Delaware is the most widely used corporate jurisdiction in the US thanks to its business-friendly laws, its specialised court (Court of Chancery), and its services infrastructure. American VCs almost always invest in Delaware C-Corps. If your product is global or your main market is the US, it makes a lot of sense.

LLC or C-Corp, which one should I choose?

The choice depends on the members, business activity, taxation and planned financing. An LLC does not have a single tax treatment: the IRS considers the number of members and any tax elections made. Before choosing a C-Corp for a funding round, confirm the structure investors require and its tax implications. Standard includes LLC formation without EIN application assistance; PRO includes EIN application assistance and the banking and conversion support described in the plan, subject to each process’s requirements.

Why is the EIN only included in the PRO plan?

The EIN (Employer Identification Number) is the company’s federal tax identification number issued by the IRS. It may be needed for tax and banking procedures; requirements for opening accounts and using payment services depend on the provider. The PRO plan includes assistance with the application. Standard includes state formation in Delaware; you can purchase EIN application assistance separately or upgrade to PRO. The IRS issues EINs free of charge: Aiden’s service covers assistance with the application.

Is Teams included in PRO Delaware, or is it a separate cost?

Teams comes included in PRO at no extra cost, just like in the UK. Invite as many members as you need (co-founders, accountant, assistant, advisors) with custom permissions. Only the admin pays the PRO subscription. If you're on the Standard LLC plan, this feature isn't available, and you'd need to move up to PRO to use it.

Do I need to travel to the US for the process?

Company formation and the Mercury account application are handled online. The account application is subject to the provider’s eligibility, documentation and approval requirements; forming the company does not guarantee that an account will be opened.

What is a registered agent, and why is it mandatory?

It's a person or company with a physical address in Delaware that receives legal communications on behalf of your company (lawsuits, state notices, etc.). It's a legal requirement in Delaware. It's included at no extra cost in every plan.

How do taxes work for my Delaware LLC if I live in Spain?

Forming an LLC in Delaware does not by itself determine how its profits are taxed in Spain. It is necessary to assess whether the entity meets Spain’s requirements for the income attribution regime and which obligations apply to the company and its members. Your adviser should review the case before filing returns. Delaware state obligations and federal IRS returns are reviewed separately; assistance with the latter is available as an additional Aiden Tax Filing service.

What is Delaware's Franchise Tax, and when is it due?

It's a fixed annual tax of $300 for LLCs (regardless of profit). It's due before June 1st each year. For C-Corps, it's calculated with a different formula based on authorized shares. We calculate it and remind you when and how to pay it — the official fee ($300 or the C-Corp calculation) you pay directly to the Delaware Division of Corporations. It's not an Aiden fee, it's a mandatory state tax.

Is a Mercury account like a traditional bank?

Mercury is a financial platform for businesses offering banking services through partner banks. Applications are submitted online and are subject to its requirements and approval. Available features and deposit protection depend on the product and its terms. Check Mercury’s current information before applying for an account.

Can I convert my LLC to a C-Corp when I'm ready to raise?

Yes. Delaware allows an LLC to convert into a corporation with the required approvals and filings. Generally, the conversion continues the entity’s existence and does not require its dissolution. Under the PRO plan, we structure the process; timing depends on documentation, approvals and the legal and tax review of the case.

What annual IRS returns do I have to file, and are they included?

Obligations depend on the company’s tax classification, transactions and tax year:

Foreign-owned single-member LLC: if treated as a disregarded entity with reportable transactions, it may require Form 5472 and pro forma Form 1120.
LLC treated as a partnership: generally files Form 1065 and Schedule K-1, subject to IRS exceptions.
C-Corp: generally files Form 1120 even without taxable income.

Check the instructions for the applicable tax year for deadlines, extensions and penalties.

These forms are NOT included in the monthly plans due to their annual, specialised nature (signature under penalty of perjury, handling IRS communications). They're managed through Aiden Tax Filing from €299/year per LLC.

Start today.
We take care of everything.

Sign up entirely online, with no prior call required (advisor optional). Company formation timing depends on complete documentation and processing by the relevant registry.

Talk to an advisor